A post by the manager of the Android Beta Program's Google+ page seems to indicate that Developer Preview 2 of Android 7.1 is slated to go live shortly. Orrin Hancock, owner of the page, says that DP2 actually began rolling out today, but we've not received any tips suggesting that's the case. No one who has replied to the thread seems to have gotten it, either, so perhaps the rollout has been slightly delayed or extremely, incredibly, strangely limited (I would hedge on the former).

Anyway, Android 7.1.1 DP2 will apparently be available for the Nexus 6P, 5X, Nexus 9, Android One, and Pixel C.